Correct Answer: A

Rationale: The correct answer is to suggest applying a warm compress to the affected ear. This can help alleviate pain and discomfort associated with the earache. Giving a cold drink (Choice B) may not address the underlying issue and is not a recommended treatment for earaches. Administering acetaminophen (Choice C) can help reduce fever but may not directly target the earache. Taking the child to the emergency department (Choice D) is usually not necessary for a common earache unless there are severe symptoms or complications present.

Correct Answer: C

Rationale: In pyloric stenosis, a palpable olive-like mass in the abdomen is a classic finding. This mass is due to the hypertrophied pyloric muscle. Abdominal rigidity (choice A) is associated with conditions like peritonitis, substernal retraction (choice B) is typically seen in respiratory distress, and marked distention of the lower abdomen (choice D) is more characteristic of conditions like intestinal obstruction rather than pyloric stenosis.

Correct Answer: B

Rationale: The correct dietary instruction for a child with GERD is to avoid gluten. Gluten is a protein found in wheat, barley, and rye, and it can exacerbate GERD symptoms in some individuals. Avoiding gluten can help reduce inflammation and irritation in the gastrointestinal tract, thereby alleviating symptoms of GERD. Choices A, C, and D are incorrect because while spicy foods, high-fat foods, and dairy products can trigger GERD symptoms in some individuals, avoiding gluten specifically is more relevant for managing GERD.

Correct Answer: A

Rationale: Projectile vomiting is the hallmark clinical manifestation of pyloric stenosis in infants. In pyloric stenosis, the muscle surrounding the opening between the stomach and the small intestine thickens, leading to obstruction. This obstruction causes forceful, projectile vomiting, which is typically non-bilious (does not contain bile) and occurs after feedings. Choices B, C, and D are incorrect because diarrhea, constipation, and abdominal distension are not typical symptoms of pyloric stenosis.

Correct Answer: A

Rationale: The correct answer is to advise the parents to avoid exposure to allergens. Asthma attacks are commonly triggered by allergens such as pollen, dust mites, pet dander, and mold. By minimizing the child's contact with these triggers, the likelihood of asthma attacks can be reduced. Encouraging regular exercise can be beneficial for overall health but may not directly prevent asthma attacks. Providing a high-protein diet and increasing fluid intake are important for general health but are not specific preventive measures for asthma attacks.